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Atoms, Elements and Compounds
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What is the atomic mass of Iodine?
126.90
What element has the atomic number 35?
Bromine!
What is the atomic mass of beryllium (Be)?
9.0121
What is the atomic number of Platinum (Pt)?
78
What element has the atomic number 8?
Oxygen!
What element has the chemical symbol Fe?
Iron!
What kind of atom is this? How can we tell?
Carbon - because it has 6 ELECTRONS and 6 PROTONS
The NEUTRALLY CHARGED parts of an atom that exist inside the nucleus are called:
 
Neutrons
 
Protons
 
Electrons
 
Electron rings
The NEGATIVELY CHARGED parts of an atom that orbit the nucleus are called:
 
Electrons
 
Neutrons
 
Protons
 
Nucleus
The POSITIVELY CHARGED parts of an atom are called:
 
Protons
 
Neutrons
 
Electrons
 
Nucleus
Is Sulfur (S) a compound or an element?
Element - it's made of only one type of atom.
Is Methane (CH4) an element or a compound?
Compound - it's made of 1 Carbon atom (C) and 4 Hydrogen atoms (H)
Is Tin (Sn) a compound or element?
Element! It's only made of one type of atom.
Is Sodium Chloride (NaCl) a compound or an element?
A compound - made up of Sodium (Na) and Chlorine (Cl)
Is Carbon Dioxide (CO2) an element or a compound?
Compound - it's made up of 1 Carbon atom and 2 Oxygen atoms.
Is Magnesium (Mg) a compound or an element?
An element - it's only made of one type of atom!
Is Hydrogen Peroxide (H2O2) an element or a compound?
A compound - it's made up of 2 hydrogen atoms and 2 oxygen atoms.
Is Boron (B) a compound or an element?
An element - only one type of atom!
Is Aluminium (Al) an element or a compound?
Element - it's only made of one type of atom!
Is Water (H2O) an element or a compound?
Compound - 2 hydrogen atoms, 1 oxygen atom
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